Home / 20,213,220.80-30,321,143.40-10,647,282.80

Finding the Fourth Proportional to 20,213,220.80, 30,321,143.40 and 10,647,282.80

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Solution

The fourth proportional to 20,213,220.80, 30,321,143.40 and 10,647,282.80 is: 15,971,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,220.80 : 30,321,143.40 = 10,647,282.80 : x
  2. Step 2: Convert to fraction form
    20,213,220.80/30,321,143.40 = 10,647,282.80/x
  3. Step 3: Cross multiply
    20,213,220.80x = 30,321,143.40 × 10,647,282.80
  4. Step 4: Simplify right side
    20,213,220.80x = 322,837,788,599,153.50
  5. Step 5: Solve for x
    x = 322,837,788,599,153.50/20,213,220.80
  6. Step 6: Final answer
    x = 15,971,615.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.